reakin

So I installed this radio a while back and everything was working fine until one day I turn it on and it showed on the dash that there was some miswiring so I took it all apart and decided to crimp them with a butt connector instead of just using electrical tape. I then hooked it back up and it was working but I forgot to put the antenna in so I reopened my dash hooked it in and then all of a sudden it just didn't even turn on. Took out the antenna and nothing...so I decided to reconnect everything AGAIN with connectors and when I turn on my car nothing happens. I have no clue what is happening and I doubt its broke. Any ideas on what might be wrong?